The Seashell Straw Cup is a revolutionary training cup designed by parents for the messiest of transitions. Crafted from pure, European-grade silicone—the first of its kind in the U.S.—this filler-free cup is completely free of plastics and harmful chemicals. With its industry-leading snap-fit lid and weighted straw, it provides a secure, leak-resistant drinking experience that supports Montessori learning and healthy oral development for toddlers and young children.